Home / 5,038.95-6,953.70-2,800.78

Finding the Fourth Proportional to 5,038.95, 6,953.70 and 2,800.78

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Solution

The fourth proportional to 5,038.95, 6,953.70 and 2,800.78 is: 3,865.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,038.95 : 6,953.70 = 2,800.78 : x
  2. Step 2: Convert to fraction form
    5,038.95/6,953.70 = 2,800.78/x
  3. Step 3: Cross multiply
    5,038.95x = 6,953.70 × 2,800.78
  4. Step 4: Simplify right side
    5,038.95x = 19,475,783.89
  5. Step 5: Solve for x
    x = 19,475,783.89/5,038.95
  6. Step 6: Final answer
    x = 3,865.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.